A semiconductor structure includes: a first semiconductor layer, a multiple quantum well layers formed on the first semiconductor layer, where the multiple quantum well layer includes a plurality of quantum barrier layers and a plurality of quantum well layers alternately arranged; an insertion layer formed on each of the plurality of quantum well layers; and a second semiconductor layer formed on the multiple quantum well layer; where a material of the insertion layer is a nitride containing a scandium component. In this application, the insertion layer, made of the nitride containing the scandium component, may repair deterioration problem of epitaxial quantum well materials. Moreover, a compressive stress on the quantum well layer located below is introduced, to achieve longer light-emitting wavelengths by using InGaN quantum well materials with a lower content of In component.